Machine for cutting shank-stiffeners for boots and shoes



I ('No Model.)

C. B. WEBB.

MAGHINHPOR CUTTING SHANK STIFFENERS FOR BOOTS AND SHOES. N0.'Z5 2,281.Patented Jan. 10,1882.

ings for a shaft,

UNITED STATES PATENT OFFICE.

CHARLES E. WEBB, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR CUTTING SHANK-STIFFENERS FOR BOOTS AND SHOES.

SPECIFICATION forming part of Letters Patent No. 252,281, dated January10, 1882. Application filed November 28, 1881. (No model.)

To all whom it may concern:

Be it known that I, CHARLES E. WEBB, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented a Machine forCutting Shank-Stiifcners for Boots and Shoes, of which the following isaspecification.

The object of my invention is to rapidly and accurately cut from piecesof leather beveled strips available for use as shank-stifieners forboots and shoes; and this object I attain in the manner which I will nowproceed to describe, reference. being had to the accompanying drawings,in which- Figure 1 is a front view of a machine for carrying out myinvention; Fig. 2, a section on the line 1 2; Fig. 3, a perspective viewof the cutting-knife, and Fig. 4 a diagram illustrating the operation ofthe machine.

A is the frame of the machine, having bear- B, which carries a fluted orserrated feed-roll, D, and is furnished with two spur-wheels, a and b,the former gearing into a pinion, 07, on the short driving-shaft E, andthe spur-wheel b gearing into a pinion, e, on a shaft, F, which isadapted to bearings in a sliding frame, G, and carries a feed-roll, J,also serrated. The frame G is acted upon by a spring, f,which tends toforce the said frame upward, but permits it to yield to accommodatedifi'erent thicknesses of leather introduced between the rolls D and J,the frame being guided in its movements by rods 11, adapted to openingsin a projection, m, of the frame A, and provided with nuts 12, which bycontact with said projection limit the upward movement of the frame Gand its roll J.

M is the cutting-knife, the front or cutting edge of which is beveled onthe under side, the continuity of the beveled edgew being interrupted bythe formation at the center of the knife ofa gouge, y, beveled intheopposite direction from the edge w. When the upper edge of the knifeis directly in line with the lower edge of the feed-roll D and a pieceof leather is forced against the knife by the feedrolls, the gouge ywill out from the upper surface of said piece of leather a strip of ashape corresponding with thatof said gouge, the portions of the piece ofleather on each side of the gouge being deflected downward by thebeveled edge a: of the knife, as shown in the diagram, Fig. .4.

It isimportant that the upper edge of the knife M should be in line withthe lower edge of the upper feed-roll; otherwise there will be on eachside of the out strip a fin of leather, which must be afterward removed.I therefore attach the knife M to a frame, N, which is secured to a bar,P, at the back of the machine, so as to be capable of verticaladjustment in respect to said bar. The knife itself is adjustable fromand toward the rolls, the bolts whereby the knife is secured to theframe N being adapted to longitudinal slots in said knife.

By the above-described machine I am enabled to cut with great rapidityfrom waste pieces or scraps of leather strips suitable for theshank-stiiieners of boots and shoes, said strips being much moreaccurate than those out by hand in the usual way.

Any desired shape may be imparted to the gouge y, and, if desired, saidgouge may form partof a and removable from or adjustable in respect tothe same. The making of the knife in one piece is, however, .preferret Iclaim as my invention- 1. The within-described knife for cuttingshank-stiffeners, said knife having a beveled front edge, 00, thecontinuity of which is interrupted by the gouge y, beveled in theopposite direction, as set forth.

2. A knife for cutting shank-stiifen ers, said knife having acutting-edge, part of which is beveled on one side a d the remainingpart made in the shape of a gouge and beveled on the opposite side,'thewhole being madein one piece, as set forth.

3. The combination of the knife M, having the beveled edge as, and gouge3 with the feedrolls D and J, as set forth.

4. The combination of the feed-rolls D and J, the knife M, having abeveled edge, w, and gouge y, and the knife-carrier N, verticallyadjustable on the frame of the machine, as set forth.

In testimony whereofl have signed my name to this specification in thepresence of two subscribing witnesses.

CHAS. B. WVEBB Witnesses GEo. A. SMITH, HARRY SMITH.

strip separate from the rest of the knife

